Class: NumericWithUnit

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/numeric_with_unit.rb,
lib/numeric_with_unit.rb,
lib/numeric_with_unit/unit.rb,
lib/numeric_with_unit/unit.rb,
lib/numeric_with_unit/util.rb,
lib/numeric_with_unit/util2.rb,
lib/numeric_with_unit/util2.rb,
lib/numeric_with_unit/core_ext.rb,
lib/numeric_with_unit/unit_definition/base.rb,
lib/numeric_with_unit/unit_definition/common.rb,
lib/numeric_with_unit/unit_definition/deprecated.rb

Defined Under Namespace

Modules: CORE_EXT, NumUtil Classes: DimensionError, Unit

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(value, unit) ⇒ NumericWithUnit 



10
11
12
13
 
# File 'lib/numeric_with_unit.rb', line 10

def initialize(value, unit)
  @value = value
  @unit = unit.is_a?(Unit) ? unit : Unit[unit]
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
 
# File 'lib/numeric_with_unit/util2.rb', line 10

def method_missing(name, *args)
  if args.empty?
    unit_str = name.to_s.gsub('_', '/')
    resolve_unit_chain(Unit[unit_str])
  else
    raise Unit::NoUnitError
  end
rescue Unit::NoUnitError
  super
end

Instance Attribute Details

#unit ⇒ Object (readonly)

Returns the value of attribute unit.



8
9
10
 
# File 'lib/numeric_with_unit.rb', line 8

def unit
  @unit
end

#value ⇒ Object (readonly)

Returns the value of attribute value.



8
9
10
 
# File 'lib/numeric_with_unit.rb', line 8

def value
  @value
end

Instance Method Details

#*(other) ⇒ Object 



103
104
105
106
107
108
109
110
 
# File 'lib/numeric_with_unit.rb', line 103

def *(other)
  case other
  when self.class
    multiply_with_other_unit(other)
  else
    self.class.new(@value*other, @unit)
  end
end

#**(num) ⇒ Object 



129
130
131
132
133
134
135
136
137
138
139
140
141
142
 
# File 'lib/numeric_with_unit.rb', line 129

def **(num)
  # Dimension Check
  if @unit.derivation.all?{|k,v| o = v * num; o.to_i == o} # TODO: 整数かどうかの判定方法いいのこれで
   self.class.new(@value**num, @unit**num)
  else
    nu = @unit.simplify
    if nu.derivation.all?{|k,v| o = v * num; o.to_i == o}
      nv = nu.from_si(@unit.to_si(@value))
      self.class.new(nv ** num, nu**num)
    else
      raise DimensionError, "All derivating units order multiplied #{num} must be integer"
    end
 end
end

#+(other) ⇒ Object 



90
91
92
93
94
95
96
97
 
# File 'lib/numeric_with_unit.rb', line 90

def +(other)
  nwu = if other.is_a? self.class
    other
  else
    self.class.new(other, Unit.new)
  end
  add_with_other_unit(nwu)
end

#+@ ⇒ Object 



82
83
84
 
# File 'lib/numeric_with_unit.rb', line 82

def +@
  self
end

#-(other) ⇒ Object 



99
100
101
 
# File 'lib/numeric_with_unit.rb', line 99

def -(other)
  self + (-other)
end

#-@ ⇒ Object 



86
87
88
 
# File 'lib/numeric_with_unit.rb', line 86

def -@
  self.class.new(-@value, @unit)
end

#/(other) ⇒ Object 



112
113
114
115
116
117
118
119
 
# File 'lib/numeric_with_unit.rb', line 112

def /(other)
  case other
  when self.class
    devide_with_other_unit(other)
  else
    self.class.new(@value/other, @unit)
  end
end

#<=>(other) ⇒ Object

If ohter is NumericWithUnit and same dimension, comparing value with converting to si. Else return nil.



27
28
29
30
31
 
# File 'lib/numeric_with_unit.rb', line 27

def <=>(other)
  if other.is_a?(self.class) and @unit.dimension_equal? other.unit
    value_si <=> other.value_si
  end
end

#===(other) ⇒ Object 



33
34
35
 
# File 'lib/numeric_with_unit.rb', line 33

def ===(other)
  self.<=>(other) == 0
end

#cbrt ⇒ Object

立方根



148
 
# File 'lib/numeric_with_unit.rb', line 148

def cbrt; root(3) end

#ceil ⇒ Object 



150
151
152
 
# File 'lib/numeric_with_unit.rb', line 150

def ceil
  self.class.new(@value.ceil, @unit)
end

#coerce(other) ⇒ Object 



121
122
123
124
125
126
127
 
# File 'lib/numeric_with_unit.rb', line 121

def coerce(other)
  if other.is_a?(self.class)
    [other, self]
  else
    [self.class.new(other, Unit.new), self]
  end
end

#convert(unit) ⇒ Object Also known as: to_nwu 



71
72
73
 
# File 'lib/numeric_with_unit.rb', line 71

def convert(unit)
  clone.convert!(unit)
end

#convert!(unit) ⇒ Object Also known as: []

Convert to given unit



58
59
60
61
62
63
64
65
66
67
68
 
# File 'lib/numeric_with_unit.rb', line 58

def convert!(unit)
  new_unit = unit.is_a?(Unit) ? unit : Unit[unit]

  unless @unit.dimension_equal? new_unit
    raise DimensionError, "Dimensions are different between #{@unit.symbol}#{@unit.dimension} #{new_unit.symbol}#{new_unit.dimension}"
  end

  new_value = new_unit.from_si(@unit.to_si(@value))
  @value, @unit = new_value, new_unit
  self
end

#floor ⇒ Object 



154
155
156
 
# File 'lib/numeric_with_unit.rb', line 154

def floor
  self.class.new(@value.floor, @unit)
end

#inspect ⇒ Object

Return String for inspect



16
17
18
 
# File 'lib/numeric_with_unit.rb', line 16

def inspect
  "#{@value.inspect} [#{@unit.symbol}] #{@unit.dimension.inspect}"
end

#root(num) ⇒ Object 



144
145
146
 
# File 'lib/numeric_with_unit.rb', line 144

def root(num)
  self**(Rational(1,num))
end

#round ⇒ Object 



158
159
160
 
# File 'lib/numeric_with_unit.rb', line 158

def round
  self.class.new(@value.round, @unit)
end

#simplify ⇒ Object

Convert to simple unit



77
78
79
 
# File 'lib/numeric_with_unit.rb', line 77

def simplify
  convert(@unit.simplify)
end

#sqrt ⇒ Object

平方根



147
 
# File 'lib/numeric_with_unit.rb', line 147

def sqrt; root(2) end

#succ ⇒ Object

Return succed value with same unit.



38
39
40
 
# File 'lib/numeric_with_unit.rb', line 38

def succ
  self.class.new(@value.succ, @unit)
end

#to_f ⇒ Object

Return value.to_f



48
49
50
 
# File 'lib/numeric_with_unit.rb', line 48

def to_f
  @value.to_f
end

#to_i ⇒ Object

Return value.to_i



43
44
45
 
# File 'lib/numeric_with_unit.rb', line 43

def to_i
  @value.to_i
end

#to_s ⇒ Object

Return String with value and unit symbol



21
22
23
 
# File 'lib/numeric_with_unit.rb', line 21

def to_s
  "#{@value.to_s} #{@unit.symbol}"
end

#truncate ⇒ Object 



162
163
164
 
# File 'lib/numeric_with_unit.rb', line 162

def truncate
  self.class.new(@value.truncate, @unit)
end

#value_si ⇒ Object

Return value in si



53
54
55
 
# File 'lib/numeric_with_unit.rb', line 53

def value_si
  @unit.to_si(@value)
end